Simulated solar light driven photothermal catalytic purification of toluene over iron oxide supported single atom Pt catalyst

被引：77

作者：

Wang, Zhiwei ^{[1
]}

Xie, Shaohua ^{[2
]}

Feng, Ying ^{[1
]}

Ma, Peijie ^{[3
]}

Zheng, Kun ^{[3
]}

Duan, Erhong ^{[4
]}

Liu, Yuxi ^{[1
]}

Dai, Hongxing ^{[1
]}

Deng, Jiguang ^{[1
]}

机构：

[1] Beijing Univ Technol, Ctr Excellence Environm Safety & Biol Effects, Key Lab Beijing Reg Air Pollut Control, Beijing Key Lab Green Catalysis & Separat, Beijing 100124, Peoples R China

[2] Univ Cent Florida, NanoSci Technol Ctr, Dept Civil, Environm, Orlando, FL 32816 USA

[3] Beijing Univ Technol, Inst Microstruct & Properties Adv Mat, Beijing Key Lab Microstruct & Properties Adv Mat, Beijing 100124, Peoples R China

[4] Hebei Univ Sci & Technol, Sch Environm Sci & Engn, 26th Yuxiang St, Shijiazhuang 050018, Hebei, Peoples R China

来源：

APPLIED CATALYSIS B-ENVIRONMENTAL | 2021年 / 298卷

基金：

国家重点研发计划;

关键词：

Single atom Pt catalyst; Light-driven photothermal catalysis; Toluene oxidation; Catalytic oxidation mechanism; Volatile organic compounds; VOLATILE ORGANIC-COMPOUNDS; TOTAL OXIDATION; PERFORMANCE; NANOPARTICLES; DEGRADATION; MN2O3; VOCS; COMBUSTION; ADSORPTION; REMOVAL;

D O I：

10.1016/j.apcatb.2021.120612

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this work, Fe2O3 supported single atom Pt (x Pt1/Fe2O3, x = 0.25 and 0.5 wt%) catalysts (SACs) are synthesized via a novel and simple impregnation-pyrolysis method. HAADF-STEM images show that Pt is atomically dispersed on the surface of Fe2O3. All samples exhibit good light-thermal conversion efficiency, which can increase the surface temperature of catalysts to 210 degrees C. The 0.5 Pt1/Fe2O3 exhibits the best photothermal catalytic performance (the toluene conversion and CO2 yield are 95 % and 87 %, respectively) for toluene oxidation under the irradiation of simulated sunlight with light intensity of 720 mW/cm2, which is attributed to its good lightthermal conversion efficiency and low temperature reducibility. The Vis-IR light plays a critical role in the photothermal catalytic oxidation of toluene in the whole solar spectrum. Furthermore, the possible photothermal catalytic reaction pathway of toluene oxidation is proposed based on the TD-GC/MS and in-situ DRIFTS experiments.

引用

页数：8

共 41 条

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